i can't connect to Apache

[nopopup]

I'm trying to integrate my game to facebook and I'm following the facebook's page since I have never made a facebook app before.
https://developers.facebook.com/docs/games/canvas/canvas-tutorial/
it says "For speed and convenience, it might be worthwhile running a local webserver as you develop. Plenty of solutions exist on the web to help you get started, most of which are free and open source. Check out XAMPP as a starting point. Once you have your web server up and running and hosting content from the web-friend-smash/friendsmash directory, navigate to index.php inside a web browser. You should hopefully see the game's front menu screen. Hit play and you'll see a simple game where celebrity photos launch on the screen."

so I installed XAMPP and ran the XAMPP control panel as Administrator and put the green check mark to the first 3 which includes Apache to install them. And then tried to start Apache by pushing the button but keeps "Attempting to start Apache services"

Please help me. I know nothing about server or web.
Thank you

11:02:05 AM [main] Initializing Control Panel
11:02:05 AM [main] Windows Version: Windows 8 64-bit
11:02:05 AM [main] XAMPP Version: 1.8.3
11:02:05 AM [main] Control Panel Version: 3.2.1 [ Compiled: May 7th 2013 ]
11:02:05 AM [main] Running with Administrator rights - good!
11:02:05 AM [main] XAMPP Installation Directory: "c:\xampp\"
11:02:05 AM [main] Checking for prerequisites
11:02:05 AM [main] All prerequisites found
11:02:05 AM [main] Initializing Modules
11:02:05 AM [Apache] Problem detected!
11:02:05 AM [Apache] Port 80 in use by "Unable to open process" with PID 4!
11:02:05 AM [Apache] Apache WILL NOT start without the configured ports free!
11:02:05 AM [Apache] You need to uninstall/disable/reconfigure the blocking application
11:02:05 AM [Apache] or reconfigure Apache and the Control Panel to listen on a different port
11:02:05 AM [main] Starting Check-Timer
11:02:05 AM [main] Control Panel Ready
11:02:08 AM [mysql] Installing service...
11:02:08 AM [mysql] Successful!
11:02:10 AM [filezilla] Setting Service Name...
11:02:10 AM [filezilla] Setting Service Display Name...
11:02:10 AM [filezilla] Installing service...
11:02:11 AM [filezilla] Successful!
11:02:13 AM [Apache] Problem detected!
11:02:13 AM [Apache] Port 80 in use by "Unable to open process" with PID 4!
11:02:13 AM [Apache] Apache WILL NOT start without the configured ports free!
11:02:13 AM [Apache] You need to uninstall/disable/reconfigure the blocking application
11:02:13 AM [Apache] or reconfigure Apache and the Control Panel to listen on a different port
11:02:13 AM [Apache] Attempting to start Apache service...

[mychaelvelli]

I ran into the same problem. Right click on the program and choose "Run as Administrator." That should solve your problem. I also disabled my anti-virus for 10 minutes while i installed xampp. Good luck.